I love them as pets, but it depends...how old is your son?
Fatty and Brangelina are water turtles, and spend nearly all their time in the water. They do need a "basking station" that they can crawl onto (like Fatty is snoozing on). So they're really more like having fish than "pets." They're really fun to watch swim, and they get SO excited when they see people come into the room! It's adorable!
I don't suggest a turtle if your son is young and very "hands-on." The turtles need a warmer temp (we have both a water heater and a heat/uv lamp), so it's not really healthy to be out of their environment too much, but people also run the risk of contracting salmonella from handling the turtles. This isn't a big deal if he's not too hands-on, or older and knows to wash his hands every time you put them in the tank, but if he's always wanting to be touching the turtles, he may get too casual and not wash everytime.
They don't take too much work to maintain, but they need a proper set up to thrive and stay healthy. At the very least, you need a 30 gallon tank, a uv/heat light, water heater, thermometer, water filter, and basking station. We also have a timer to make sure they get the right amount of light daily. They need water added often (because of evaporation) and they need their tank scrubbed about once every 2 weeks because of poop and algae. They'll need it cleaned more often when they get bigger.
If you're new to having any aquatic animal, you may actually want to start with a bigger, older turtle because they are hardier than hatchlings like mine. They can eat pelleted food or small fish, and since I've raised mine since hatchlings, they like to eat off my finger! If you are interested in one, make sure you get one that has been bred/raised in captivity. The ones plucked from the wild are not only eco-unfriendly, but are more prone to getting sick or giving you salmonella.
I hope that gives you some idea about turtle ownership! Let me know if you need any other info! Here's some more pics of my "swimmies."






I don't drink coffee sir. I don't drink any hot liquids. That's the devil's temperature.
